Design and Analysis of Pressure Vessel Assembly for Testing of Missile Canister Sections Under Differential Pressures

AbstractIn this work, a pressure vessel is designed to simulate differential pressure conditions on components of missiles and canisters. This design mainly concerned with two pressure chamber mounted concentrically, out of which outer chamber experiences internal pressure and the other experiences external pressure. The operating pressure conditions are 45×105 Pa external and 10×105 Pa internal. The chamber is designed for 100×105 Pa external and 50×105 Pa internal pressure with consideration of safety issues involved in the operation. Primarily, the design is based on IS 2825 unfired pressure vessel code and materials are chosen as per the standard ASTM A516 Gr. 70 pressure vessel steels. The other mounting fixtures, supporting channels and beams are as per the standard and all the other materials are of IS 2062 structural steel. The design is iterated many times to satisfy the desired requirements. The equivalent stresses and strain energy stored in the critical location of both pressure vessels are calculated. The fatigue life of the entire system are also estimated based on the stress and strain based designs with consideration of the fully reversed and zero based loading conditions